Switching layers is slow and laggy in Photoshop CC 2015

Experiencing really annoying lag when doing simple UI stuff in CC 2015. In this clip, I'm getting a spinner every time I select a different layer in the Layers palette. I pop around different layers a lot, so even this 1-2 second lag is a huge momentum-killer for me. Almost unusable.

Have the same issue on 7 Mac Pro's. Tried the same files on home (i5 6600k, AMD Fury X) computer. I couldn't make it lag multiplying all layers x5 times. And on Mac Pro's I can't paint, as brush lags so much that I have to wait 10 sec to photoshop to respond on UI. This issue is so frustrating as we have 7 workstations and they all have the same problem... I have contacted Adobe multiple times. All I have got is them blaming AMD for bad drivers or no response at all.

No, you can't change the drivers.You can disable third party plugins and extension panels, and any other software or utilities you have running.And a few people with slowdowns had accidentally left the Script Listener plugin running (and it does take time to dump all the events to a file on disk).

But why is it so slow for you, and not for other users?Any chance you're just working on a bigger document than you think (double check the pixel size and make sure you didn't mistake inches for pixels)?

I'm glad for those other users who don't have this problem, but it's really bad argument for me, because I do have this problem. And I can't figure out why my computer performance is so bad. I need help to narrow down where is the problem and fix it.The files are not small, but PC handles them just fine. I had no slow down multiplying amount of layers five times and doubling files dpi. And it's mostly adjustment layers problem. There is something really wrong the way they are rendered on MAC's using GPU. I can't see the GPU workload if it's busy at all, but I can't paint 2px wide brush on photoshop while zoomed in 100%. And it's not just one computer. I have 7 of them, and I bet could reproduce this at any MAC pro.

That still sounds like it is a driver problem, but doesn't explain why most MacPro users are not seeing such a slowdown. There is still something different about your system/configuration/setup from most other user's systems - something that causes the slowdown you are seeing.